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Finding the Fourth Proportional to 552.02, 761.37 and 386.27

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Solution

The fourth proportional to 552.02, 761.37 and 386.27 is: 532.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.02 : 761.37 = 386.27 : x
  2. Step 2: Convert to fraction form
    552.02/761.37 = 386.27/x
  3. Step 3: Cross multiply
    552.02x = 761.37 × 386.27
  4. Step 4: Simplify right side
    552.02x = 294,091.99
  5. Step 5: Solve for x
    x = 294,091.99/552.02
  6. Step 6: Final answer
    x = 532.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.